A multistandard dual-mode fully-integrated miniature, low-power-consumption 860-960 MHz CMOS RFID reader for mobile communications, sensing, and networking
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A fully-integrated single-chip radio frequency identification (RFID) reader consisting of zero-IF receiver, direct up-conversion transmitter, sigma-delta phase-locked loop synthesizer, and modulation/demodulation (MODEM) module has been developed using 0.18 m CMOS process.The RFID reader operates from 860-960 MHz in steps of 100/200 kHz, supporting a multiband global standard suitable for USA, Europe, and Korea for both passive and active communication. It is specifically designed to achieve small size, low spur levels, low power consumption, and complete integration while meeting requirements for short-range applications. The developed reader exhibits transmitting output power of -7.4 dBm controllable over 15 dB range, receiver's P1dB of -7 dBm, sensitivity of -70 dBm, and IF spectral purity of more than 46.4 dBc at frequencies greater than 140.625 Hz away. The complete RFID reader including transmitter, receiver, synthesizer, ADC, DAC, and MODEM occupies 10.9 mm 2 and consumes 116.18 mW. 2012 Wiley Periodicals, Inc.
